N.B: Do not confuse
this odd cultivar with the common
F. glaucescens forma nuda which is a completely different cultivar
that is superficially similar only when very young. The unique charm of this
plant will be revealed as it ages.
Description: The Ferocactus glaucescens forma mostruosa nuda
is a strange solitary, barrel cactus that forms a beautiful stems,
that looks like an old weathered rock.
Stem: The younger plants are very similar to the common
F. glaucescens forma nuda with
spineless globular depressed
glaucous grey stems,
but the epidermis of this cultivars starts soon to split open assuming
the appearance of a rock surface.
and in a few years the plant take on a completely different appearance.
The stem slowly grows up to 55 cm in height, 50 cm in
diameter and may become shortly columnar as it ages.
Ribs: 11 to 15 , but very irregular often fused together,
suddenly broken or scratched
with thin grooves.
Areoles: Light orangish or greyish, long and often fused
one to each other.
Flowers: Lemon yellow, funnel-shaped,
3-4 cm in diameter. The tepals are oblong, lanceolate, silky, shining;
the margins are finely fringed. Stamen, style and stigma are yellow.
Stigma lobes: 12-15.
Blooming season: Late spring and summer. The flowers last a very
long time. The plants start flowering when about 13
cm in diameter.
Fruit: White, 2 cm long with the remnants of the flowers